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          ubuntu常用命令
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        <h1 id="ubuntu常用命令使用"><a href="#ubuntu常用命令使用" class="headerlink" title="ubuntu常用命令使用"></a>ubuntu常用命令使用</h1><h2 id="常用命令"><a href="#常用命令" class="headerlink" title="常用命令"></a>常用命令</h2><ul>
<li>创建软链接<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">sudo rm -rf /usr/bin/python # 删除原有软链接</span><br><span class="line">sudo ln -s /usr/xxx/python3.6 /usr/bin/python # 创建python软链接指向Python3.6</span><br></pre></td></tr></table></figure></li>
</ul>
<span id="more"></span>

<ul>
<li><p>查看进程信息</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><span class="line">ps 查看linux中运行进程的命令</span><br><span class="line">ps -ef|grep python	查看python的进程信息</span><br></pre></td></tr></table></figure></li>
<li><p>查看日志信息</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">tail -f xxx.log</span><br></pre></td></tr></table></figure></li>
<li><p>查看磁盘空间占用情况</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">df -h</span><br></pre></td></tr></table></figure></li>
<li><p>查看当前目录文件占用内存大小</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">du -sh *</span><br></pre></td></tr></table></figure></li>
<li><p>查看各进程资源占用情况</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">top</span><br></pre></td></tr></table></figure></li>
<li><p>权限</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"># 修改文件权限</span><br><span class="line">chmod 权限(775) xx</span><br><span class="line">chmod +x xxx	# 给与执行权限</span><br><span class="line"># 修改文件所有者</span><br><span class="line">chown user:group xxx</span><br><span class="line">chown -R user:group xxx *</span><br></pre></td></tr></table></figure></li>
<li><p>复制、移动</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"># 复制</span><br><span class="line">cp xxx  xxx.bak</span><br><span class="line">cp -r xxx  xxx.bak	# 复制文件及其子文件</span><br><span class="line"># 移动</span><br><span class="line">mv xxx xxx	# 移动文件或文件夹</span><br><span class="line">mv xxx* xxx	# 移动文件夹下所有文件和目录</span><br></pre></td></tr></table></figure></li>
<li><p>查看日志</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">tail x.log # 查看日志</span><br><span class="line">tail -f x.log # 查看实时日志</span><br><span class="line">tail -n 100 x.log # 查看最近100条日志 </span><br></pre></td></tr></table></figure></li>
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